WhisperAir S4 | 4 Inch Silent Mixed-flow Inline Duct Fan, 167 CFM, Without Plug, silencer cotton for Home,Hotel backdraft-damper HONGUAN duct silencer is suitable

HONGUAN duct silencer is suitable for HVAC system

ideal for spaces where quick and efficient air movement is needed

proper installation and regular maintenance are essential

HVAC Seamlessly integrates with HVAC systems to enhance overall climate control and air circulation

EcoSync (Wireless) S Smart fan with wireless control for easy adjustments and optimal energy efficiency

WhisperAir S4 | 4 Inch Silent Mixed-flow Inline Duct Fan, 167 CFM, Without Plug, silencer cotton for Home,Hotel backdraft-damper HONGUAN duct silencer is suitable1, The Mixed flow duct fan is constructed with durable PP material. 2, The duct fan operates efficiently within a temperature range of 20 to 60. 3, Optional Function: Three speed motor; Timer; Temperature, humidity sensor.